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1182 lines
24 KiB
1182 lines
24 KiB
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// gl_warp.c -- sky and water polygons
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#include "quakedef.h"
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extern model_t *loadmodel;
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int skytexturenum;
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int solidskytexture;
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int alphaskytexture;
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float speedscale; // for top sky and bottom sky
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msurface_t *warpface;
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// jkrige - quake2 warps
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//extern cvar_t gl_subdivide_size;
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#define SUBDIVIDE_SIZE 64
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// jkrige - quake2 warps
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void BoundPoly (int numverts, float *verts, vec3_t mins, vec3_t maxs)
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{
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int i, j;
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float *v;
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mins[0] = mins[1] = mins[2] = 9999;
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maxs[0] = maxs[1] = maxs[2] = -9999;
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v = verts;
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for (i=0 ; i<numverts ; i++)
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for (j=0 ; j<3 ; j++, v++)
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{
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if (*v < mins[j])
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mins[j] = *v;
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if (*v > maxs[j])
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maxs[j] = *v;
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}
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}
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// jkrige - quake2 warps
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void SubdividePolygon (int numverts, float *verts)
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{
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int i, j, k;
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vec3_t mins, maxs;
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float m;
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float *v;
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vec3_t front[64], back[64];
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int f, b;
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float dist[64];
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float frac;
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glpoly_t *poly;
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float s, t;
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vec3_t total;
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float total_s, total_t;
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if (numverts > 60)
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Sys_Error ("numverts = %i", numverts);
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//if (numverts > 60)
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// ri.Sys_Error (ERR_DROP, "numverts = %i", numverts);
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BoundPoly (numverts, verts, mins, maxs);
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for (i=0 ; i<3 ; i++)
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{
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m = (mins[i] + maxs[i]) * 0.5;
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m = SUBDIVIDE_SIZE * floor (m/SUBDIVIDE_SIZE + 0.5);
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if (maxs[i] - m < 8)
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continue;
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if (m - mins[i] < 8)
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continue;
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// cut it
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v = verts + i;
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for (j=0 ; j<numverts ; j++, v+= 3)
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dist[j] = *v - m;
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// wrap cases
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dist[j] = dist[0];
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v-=i;
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VectorCopy (verts, v);
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f = b = 0;
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v = verts;
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for (j=0 ; j<numverts ; j++, v+= 3)
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{
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if (dist[j] >= 0)
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{
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VectorCopy (v, front[f]);
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f++;
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}
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if (dist[j] <= 0)
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{
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VectorCopy (v, back[b]);
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b++;
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}
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if (dist[j] == 0 || dist[j+1] == 0)
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continue;
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if ( (dist[j] > 0) != (dist[j+1] > 0) )
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{
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// clip point
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frac = dist[j] / (dist[j] - dist[j+1]);
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for (k=0 ; k<3 ; k++)
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front[f][k] = back[b][k] = v[k] + frac*(v[3+k] - v[k]);
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f++;
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b++;
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}
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}
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SubdividePolygon (f, front[0]);
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SubdividePolygon (b, back[0]);
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return;
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}
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// add a point in the center to help keep warp valid
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poly = Hunk_Alloc (sizeof(glpoly_t) + ((numverts-4)+2) * VERTEXSIZE*sizeof(float));
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poly->next = warpface->polys;
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warpface->polys = poly;
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poly->numverts = numverts+2;
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VectorClear (total);
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total_s = 0;
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total_t = 0;
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for (i=0 ; i<numverts ; i++, verts+= 3)
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{
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VectorCopy (verts, poly->verts[i+1]);
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s = DotProduct (verts, warpface->texinfo->vecs[0]);
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t = DotProduct (verts, warpface->texinfo->vecs[1]);
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total_s += s;
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total_t += t;
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VectorAdd (total, verts, total);
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poly->verts[i+1][3] = s;
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poly->verts[i+1][4] = t;
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}
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VectorScale (total, (1.0/numverts), poly->verts[0]);
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poly->verts[0][3] = total_s/numverts;
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poly->verts[0][4] = total_t/numverts;
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// copy first vertex to last
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memcpy (poly->verts[i+1], poly->verts[1], sizeof(poly->verts[0]));
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}
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/*void SubdividePolygon (int numverts, float *verts)
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{
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int i, j, k;
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vec3_t mins, maxs;
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float m;
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float *v;
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vec3_t front[64], back[64];
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int f, b;
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float dist[64];
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float frac;
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glpoly_t *poly;
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float s, t;
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if (numverts > 60)
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Sys_Error ("numverts = %i", numverts);
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BoundPoly (numverts, verts, mins, maxs);
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for (i=0 ; i<3 ; i++)
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{
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m = (mins[i] + maxs[i]) * 0.5;
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m = gl_subdivide_size.value * floor (m/gl_subdivide_size.value + 0.5);
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if (maxs[i] - m < 8)
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continue;
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if (m - mins[i] < 8)
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continue;
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// cut it
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v = verts + i;
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for (j=0 ; j<numverts ; j++, v+= 3)
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dist[j] = *v - m;
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// wrap cases
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dist[j] = dist[0];
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v-=i;
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VectorCopy (verts, v);
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f = b = 0;
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v = verts;
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for (j=0 ; j<numverts ; j++, v+= 3)
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{
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if (dist[j] >= 0)
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{
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VectorCopy (v, front[f]);
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f++;
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}
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if (dist[j] <= 0)
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{
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VectorCopy (v, back[b]);
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b++;
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}
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if (dist[j] == 0 || dist[j+1] == 0)
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continue;
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if ( (dist[j] > 0) != (dist[j+1] > 0) )
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{
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// clip point
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frac = dist[j] / (dist[j] - dist[j+1]);
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for (k=0 ; k<3 ; k++)
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front[f][k] = back[b][k] = v[k] + frac*(v[3+k] - v[k]);
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f++;
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b++;
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}
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}
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SubdividePolygon (f, front[0]);
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SubdividePolygon (b, back[0]);
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return;
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}
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poly = Hunk_Alloc (sizeof(glpoly_t) + (numverts-4) * VERTEXSIZE*sizeof(float));
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poly->next = warpface->polys;
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warpface->polys = poly;
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poly->numverts = numverts;
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for (i=0 ; i<numverts ; i++, verts+= 3)
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{
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VectorCopy (verts, poly->verts[i]);
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s = DotProduct (verts, warpface->texinfo->vecs[0]);
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t = DotProduct (verts, warpface->texinfo->vecs[1]);
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poly->verts[i][3] = s;
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poly->verts[i][4] = t;
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}
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}*/
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// jkrige - quake2 warps
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/*
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================
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GL_SubdivideSurface
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Breaks a polygon up along axial 64 unit
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boundaries so that turbulent and sky warps
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can be done reasonably.
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================
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*/
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void GL_SubdivideSurface (msurface_t *fa)
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{
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vec3_t verts[64];
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int numverts;
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int i;
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int lindex;
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float *vec;
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//texture_t *t;
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warpface = fa;
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//
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// convert edges back to a normal polygon
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//
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numverts = 0;
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for (i=0 ; i<fa->numedges ; i++)
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{
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lindex = loadmodel->surfedges[fa->firstedge + i];
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if (lindex > 0)
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vec = loadmodel->vertexes[loadmodel->edges[lindex].v[0]].position;
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else
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vec = loadmodel->vertexes[loadmodel->edges[-lindex].v[1]].position;
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VectorCopy (vec, verts[numverts]);
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numverts++;
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}
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SubdividePolygon (numverts, verts[0]);
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}
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//=========================================================
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// speed up sin calculations - Ed
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// jkrige - quake2 warps
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/*float turbsin[] =
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{
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#include "gl_warp_sin.h"
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};*/
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// jkrige - quake2 warps
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#define TURBSCALE (256.0 / (2 * M_PI))
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/*
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=============
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EmitWaterPolys
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Does a water warp on the pre-fragmented glpoly_t chain
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=============
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*/
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// jkrige - quake2 warps
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void EmitWaterPolys (msurface_t *fa)
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{
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glpoly_t *p, *bp;
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float *v;
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int i;
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float s, t, os, ot;
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//float rdt = realtime;
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for (bp=fa->polys ; bp ; bp=bp->next)
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{
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p = bp;
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glBegin (GL_TRIANGLE_FAN);
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for (i=0,v=p->verts[0] ; i<p->numverts ; i++, v+=VERTEXSIZE)
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{
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os = v[3];
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ot = v[4];
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//s = os + turbsin[(int)((ot * 0.125 + realtime) * TURBSCALE) & 255];
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s = os + sin(DEG2RAD((ot * 0.125 + realtime) * TURBSCALE)) * 3.7;
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s *= (1.0/64);
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//t = ot + turbsin[(int)((os * 0.125 + realtime) * TURBSCALE) & 255];
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t = ot + sin(DEG2RAD((os * 0.125 + realtime) * TURBSCALE)) * 3.7;
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t *= (1.0/64);
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glTexCoord2f (s, t);
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glVertex3fv (v);
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}
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glEnd ();
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}
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}
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/*void EmitWaterPolys (msurface_t *fa)
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{
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glpoly_t *p;
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float *v;
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int i;
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float s, t, os, ot;
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for (p=fa->polys ; p ; p=p->next)
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{
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glBegin (GL_POLYGON);
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for (i=0,v=p->verts[0] ; i<p->numverts ; i++, v+=VERTEXSIZE)
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{
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os = v[3];
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ot = v[4];
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s = os + turbsin[(int)((ot*0.125+realtime) * TURBSCALE) & 255];
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s *= (1.0/64);
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t = ot + turbsin[(int)((os*0.125+realtime) * TURBSCALE) & 255];
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t *= (1.0/64);
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glTexCoord2f (s, t);
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glVertex3fv (v);
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}
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glEnd ();
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}
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}*/
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// jkrige - quake2 warps
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/*
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=============
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EmitSkyPolys
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=============
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*/
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void EmitSkyPolys (msurface_t *fa)
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{
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glpoly_t *p;
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float *v;
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int i;
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float s, t;
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vec3_t dir;
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float length;
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// jkrige - wireframe
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if (gl_wireframe.value)
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return;
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// jkrige - wireframe
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for (p=fa->polys ; p ; p=p->next)
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{
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glBegin (GL_POLYGON);
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for (i=0,v=p->verts[0] ; i<p->numverts ; i++, v+=VERTEXSIZE)
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{
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VectorSubtract (v, r_origin, dir);
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dir[2] *= 3; // flatten the sphere
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length = dir[0]*dir[0] + dir[1]*dir[1] + dir[2]*dir[2];
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length = sqrt (length);
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length = 6*63/length;
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dir[0] *= length;
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dir[1] *= length;
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s = (speedscale + dir[0]) * (1.0/128);
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t = (speedscale + dir[1]) * (1.0/128);
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glTexCoord2f (s, t);
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glVertex3fv (v);
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}
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glEnd ();
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}
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}
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/*
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===============
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EmitBothSkyLayers
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Does a sky warp on the pre-fragmented glpoly_t chain
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This will be called for brushmodels, the world
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will have them chained together.
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===============
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*/
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void EmitBothSkyLayers (msurface_t *fa)
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{
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int i;
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int lindex;
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float *vec;
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// jkrige - remove multitexture
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//GL_DisableMultitexture();
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// jkrige - remove multitexture
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// jkrige - wireframe
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if (gl_wireframe.value)
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return;
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// jkrige - wireframe
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GL_Bind (solidskytexture);
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speedscale = realtime*8;
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speedscale -= (int)speedscale & ~127 ;
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EmitSkyPolys (fa);
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glEnable (GL_BLEND);
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GL_Bind (alphaskytexture);
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speedscale = realtime*16;
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speedscale -= (int)speedscale & ~127 ;
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EmitSkyPolys (fa);
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glDisable (GL_BLEND);
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}
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#ifndef QUAKE2
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/*
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=================
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R_DrawSkyChain
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=================
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*/
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// jkrige - skybox
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/*void R_DrawSkyChain (msurface_t *s)
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{
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msurface_t *fa;
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// jkrige - remove multitexture
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//GL_DisableMultitexture();
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// jkrige - remove multitexture
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// used when gl_texsort is on
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GL_Bind(solidskytexture);
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speedscale = realtime*8;
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speedscale -= (int)speedscale & ~127 ;
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for (fa=s ; fa ; fa=fa->texturechain)
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EmitSkyPolys (fa);
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glEnable (GL_BLEND);
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GL_Bind (alphaskytexture);
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speedscale = realtime*16;
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speedscale -= (int)speedscale & ~127 ;
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for (fa=s ; fa ; fa=fa->texturechain)
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EmitSkyPolys (fa);
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glDisable (GL_BLEND);
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}*/
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// jkrige - skybox
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#endif
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/*
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=================================================================
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Quake 2 environment sky
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=================================================================
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*/
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//#ifdef QUAKE2 // jkrige - skybox
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#define SKY_TEX 2560 // jkrige - skybox
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/*
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==================
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R_LoadSkys
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==================
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*/
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char *suf[6] = {"_rt", "_bk", "_lf", "_ft", "_up", "_dn"};
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// jkrige - skybox
|
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/*void R_LoadSkys (void)
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{
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int i;
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FILE *f;
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char name[64];
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for (i=0 ; i<6 ; i++)
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{
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GL_Bind (SKY_TEX + i);
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sprintf (name, "gfx/env/bkgtst%s.tga", suf[i]);
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COM_FOpenFile (name, &f, false);
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if (!f)
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{
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Con_Printf ("Couldn't load %s\n", name);
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continue;
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}
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LoadTGA (f);
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// LoadPCX (f);
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glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, targa_rgba);
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// glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, pcx_rgb);
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free (targa_rgba);
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// free (pcx_rgb);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
|
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}*/
|
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|
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void R_LoadSkys (void)
|
|
{
|
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int i;
|
|
char name[64];
|
|
byte *data;
|
|
|
|
for (i=0 ; i<6 ; i++)
|
|
{
|
|
sprintf (name, "skies/%s%s", cl.skybox, suf[i]);
|
|
if (!(data = LoadImagePixels (name, true)))
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|
{
|
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Cvar_Set("gl_skytype", "0");
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|
return;
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|
}
|
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|
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GL_Bind (SKY_TEX + i);
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|
|
if(image_bits == 8)
|
|
GL_Upload8 (data, image_width, image_height, false, false);
|
|
if(image_bits == 32)
|
|
GL_Upload32 ((void*)data, image_width, image_height, false, false);
|
|
|
|
free(data);
|
|
|
|
// jkrige - texture mode
|
|
if(gl_texturemode.value == 0.0f)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
}
|
|
// jkrige - texture mode
|
|
}
|
|
|
|
Cvar_Set("gl_skytype", "1");
|
|
}
|
|
// jkrige - skybox
|
|
|
|
|
|
vec3_t skyclip[6] = {
|
|
{1,1,0},
|
|
{1,-1,0},
|
|
{0,-1,1},
|
|
{0,1,1},
|
|
{1,0,1},
|
|
{-1,0,1}
|
|
};
|
|
int c_sky;
|
|
|
|
// 1 = s, 2 = t, 3 = 2048
|
|
int st_to_vec[6][3] =
|
|
{
|
|
{3,-1,2},
|
|
{-3,1,2},
|
|
|
|
{1,3,2},
|
|
{-1,-3,2},
|
|
|
|
{-2,-1,3}, // 0 degrees yaw, look straight up
|
|
{2,-1,-3} // look straight down
|
|
|
|
// {-1,2,3},
|
|
// {1,2,-3}
|
|
};
|
|
|
|
// s = [0]/[2], t = [1]/[2]
|
|
int vec_to_st[6][3] =
|
|
{
|
|
{-2,3,1},
|
|
{2,3,-1},
|
|
|
|
{1,3,2},
|
|
{-1,3,-2},
|
|
|
|
{-2,-1,3},
|
|
{-2,1,-3}
|
|
|
|
// {-1,2,3},
|
|
// {1,2,-3}
|
|
};
|
|
|
|
#define MAX_CLIP_VERTS 64
|
|
// jkrige - skybox (clipping)
|
|
//float skymins[2][6], skymaxs[2][6]; // jkrige - skybox
|
|
|
|
/*void DrawSkyPolygon (int nump, vec3_t vecs)
|
|
{
|
|
int i,j;
|
|
vec3_t v, av;
|
|
float s, t, dv;
|
|
int axis;
|
|
float *vp;
|
|
|
|
c_sky++;
|
|
#if 0
|
|
glBegin (GL_POLYGON);
|
|
for (i=0 ; i<nump ; i++, vecs+=3)
|
|
{
|
|
VectorAdd(vecs, r_origin, v);
|
|
glVertex3fv (v);
|
|
}
|
|
glEnd();
|
|
return;
|
|
#endif
|
|
// decide which face it maps to
|
|
VectorCopy (vec3_origin, v);
|
|
for (i=0, vp=vecs ; i<nump ; i++, vp+=3)
|
|
{
|
|
VectorAdd (vp, v, v);
|
|
}
|
|
av[0] = fastfabs(v[0]);
|
|
av[1] = fastfabs(v[1]);
|
|
av[2] = fastfabs(v[2]);
|
|
if (av[0] > av[1] && av[0] > av[2])
|
|
{
|
|
if (v[0] < 0)
|
|
axis = 1;
|
|
else
|
|
axis = 0;
|
|
}
|
|
else if (av[1] > av[2] && av[1] > av[0])
|
|
{
|
|
if (v[1] < 0)
|
|
axis = 3;
|
|
else
|
|
axis = 2;
|
|
}
|
|
else
|
|
{
|
|
if (v[2] < 0)
|
|
axis = 5;
|
|
else
|
|
axis = 4;
|
|
}
|
|
|
|
// project new texture coords
|
|
for (i=0 ; i<nump ; i++, vecs+=3)
|
|
{
|
|
j = vec_to_st[axis][2];
|
|
if (j > 0)
|
|
dv = vecs[j - 1];
|
|
else
|
|
dv = -vecs[-j - 1];
|
|
|
|
j = vec_to_st[axis][0];
|
|
if (j < 0)
|
|
s = -vecs[-j -1] / dv;
|
|
else
|
|
s = vecs[j-1] / dv;
|
|
j = vec_to_st[axis][1];
|
|
if (j < 0)
|
|
t = -vecs[-j -1] / dv;
|
|
else
|
|
t = vecs[j-1] / dv;
|
|
|
|
if (s < skymins[0][axis])
|
|
skymins[0][axis] = s;
|
|
if (t < skymins[1][axis])
|
|
skymins[1][axis] = t;
|
|
if (s > skymaxs[0][axis])
|
|
skymaxs[0][axis] = s;
|
|
if (t > skymaxs[1][axis])
|
|
skymaxs[1][axis] = t;
|
|
}
|
|
}
|
|
|
|
void ClipSkyPolygon (int nump, vec3_t vecs, int stage)
|
|
{
|
|
float *norm;
|
|
float *v;
|
|
qboolean front, back;
|
|
float d, e;
|
|
float dists[MAX_CLIP_VERTS];
|
|
int sides[MAX_CLIP_VERTS];
|
|
vec3_t newv[2][MAX_CLIP_VERTS];
|
|
int newc[2];
|
|
int i, j;
|
|
|
|
if (nump > MAX_CLIP_VERTS-2)
|
|
Sys_Error ("ClipSkyPolygon: MAX_CLIP_VERTS");
|
|
if (stage == 6)
|
|
{ // fully clipped, so draw it
|
|
DrawSkyPolygon (nump, vecs);
|
|
return;
|
|
}
|
|
|
|
front = back = false;
|
|
norm = skyclip[stage];
|
|
for (i=0, v = vecs ; i<nump ; i++, v+=3)
|
|
{
|
|
d = DotProduct (v, norm);
|
|
if (d > ON_EPSILON)
|
|
{
|
|
front = true;
|
|
sides[i] = SIDE_FRONT;
|
|
}
|
|
else if (d < ON_EPSILON)
|
|
{
|
|
back = true;
|
|
sides[i] = SIDE_BACK;
|
|
}
|
|
else
|
|
sides[i] = SIDE_ON;
|
|
dists[i] = d;
|
|
}
|
|
|
|
if (!front || !back)
|
|
{ // not clipped
|
|
ClipSkyPolygon (nump, vecs, stage+1);
|
|
return;
|
|
}
|
|
|
|
// clip it
|
|
sides[i] = sides[0];
|
|
dists[i] = dists[0];
|
|
VectorCopy (vecs, (vecs+(i*3)) );
|
|
newc[0] = newc[1] = 0;
|
|
|
|
for (i=0, v = vecs ; i<nump ; i++, v+=3)
|
|
{
|
|
switch (sides[i])
|
|
{
|
|
case SIDE_FRONT:
|
|
VectorCopy (v, newv[0][newc[0]]);
|
|
newc[0]++;
|
|
break;
|
|
case SIDE_BACK:
|
|
VectorCopy (v, newv[1][newc[1]]);
|
|
newc[1]++;
|
|
break;
|
|
case SIDE_ON:
|
|
VectorCopy (v, newv[0][newc[0]]);
|
|
newc[0]++;
|
|
VectorCopy (v, newv[1][newc[1]]);
|
|
newc[1]++;
|
|
break;
|
|
}
|
|
|
|
if (sides[i] == SIDE_ON || sides[i+1] == SIDE_ON || sides[i+1] == sides[i])
|
|
continue;
|
|
|
|
d = dists[i] / (dists[i] - dists[i+1]);
|
|
for (j=0 ; j<3 ; j++)
|
|
{
|
|
e = v[j] + d*(v[j+3] - v[j]);
|
|
newv[0][newc[0]][j] = e;
|
|
newv[1][newc[1]][j] = e;
|
|
}
|
|
newc[0]++;
|
|
newc[1]++;
|
|
}
|
|
|
|
// continue
|
|
ClipSkyPolygon (newc[0], newv[0][0], stage+1);
|
|
ClipSkyPolygon (newc[1], newv[1][0], stage+1);
|
|
}*/
|
|
// jkrige - skybox (clipping)
|
|
|
|
/*
|
|
=================
|
|
R_DrawSkyChain
|
|
=================
|
|
*/
|
|
void R_DrawSkyChain (msurface_t *s)
|
|
{
|
|
msurface_t *fa;
|
|
|
|
int i;
|
|
vec3_t verts[MAX_CLIP_VERTS];
|
|
glpoly_t *p;
|
|
|
|
// jkrige - wireframe
|
|
if (gl_wireframe.value)
|
|
return;
|
|
// jkrige - wireframe
|
|
|
|
if(!strcmpi(cl.skybox, "") | gl_skytype.value == 0)
|
|
{
|
|
// used when gl_texsort is on
|
|
GL_Bind(solidskytexture);
|
|
speedscale = realtime*8;
|
|
speedscale -= (int)speedscale & ~127 ;
|
|
|
|
for (fa=s ; fa ; fa=fa->texturechain)
|
|
EmitSkyPolys (fa);
|
|
|
|
glEnable (GL_BLEND);
|
|
GL_Bind (alphaskytexture);
|
|
speedscale = realtime*16;
|
|
speedscale -= (int)speedscale & ~127;
|
|
|
|
for (fa=s ; fa ; fa=fa->texturechain)
|
|
EmitSkyPolys (fa);
|
|
|
|
glDisable (GL_BLEND);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
R_ClearSkyBox
|
|
==============
|
|
*/
|
|
// jkrige - skybox (clipping)
|
|
/*void R_ClearSkyBox (void)
|
|
{
|
|
int i;
|
|
|
|
for (i=0 ; i<6 ; i++)
|
|
{
|
|
skymins[0][i] = skymins[1][i] = 9999;
|
|
skymaxs[0][i] = skymaxs[1][i] = -9999;
|
|
}
|
|
}*/
|
|
// jkrige - skybox (clipping)
|
|
|
|
|
|
void MakeSkyVec (float s, float t, int axis)
|
|
{
|
|
vec3_t v, b;
|
|
int j, k;
|
|
|
|
// jkrige - skybox (enlarged)
|
|
/*b[0] = s*2048;
|
|
b[1] = t*2048;
|
|
b[2] = 2048;*/
|
|
b[0] = s*2360;
|
|
b[1] = t*2360;
|
|
b[2] = 2360;
|
|
// jkrige - skybox (enlarged)
|
|
|
|
for (j=0 ; j<3 ; j++)
|
|
{
|
|
k = st_to_vec[axis][j];
|
|
if (k < 0)
|
|
v[j] = -b[-k - 1];
|
|
else
|
|
v[j] = b[k - 1];
|
|
v[j] += r_origin[j];
|
|
}
|
|
|
|
// avoid bilerp seam
|
|
s = (s+1)*0.5;
|
|
t = (t+1)*0.5;
|
|
|
|
if (s < 1.0/512)
|
|
s = 1.0/512;
|
|
else if (s > 511.0/512)
|
|
s = 511.0/512;
|
|
if (t < 1.0/512)
|
|
t = 1.0/512;
|
|
else if (t > 511.0/512)
|
|
t = 511.0/512;
|
|
|
|
t = 1.0 - t;
|
|
glTexCoord2f (s, t);
|
|
glVertex3fv (v);
|
|
}
|
|
|
|
/*
|
|
==============
|
|
R_DrawSkyBox
|
|
==============
|
|
*/
|
|
int skytexorder[6] = {0,2,1,3,4,5};
|
|
void R_DrawSkyBox (void)
|
|
{
|
|
int i, j, k;
|
|
vec3_t v;
|
|
float s, t;
|
|
|
|
if(gl_skytype.value != 1)
|
|
return;
|
|
|
|
// jkrige - wireframe
|
|
if (gl_wireframe.value)
|
|
return;
|
|
// jkrige - wireframe
|
|
|
|
//#if 0
|
|
//glEnable (GL_BLEND);
|
|
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
//glColor4f (1,1,1,0.5);
|
|
glDisable (GL_DEPTH_TEST); // jkrige - skybox (disabled depth ckecking)
|
|
//#endif
|
|
|
|
//glGetIntegerv(GL_DEPTH_FUNC, &gld);
|
|
//glDepthFunc(GL_GREATER);
|
|
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
//glDisable (GL_DEPTH_TEST);
|
|
for (i=0 ; i<6 ; i++)
|
|
{
|
|
//if (skymins[0][i] >= skymaxs[0][i]
|
|
//|| skymins[1][i] >= skymaxs[1][i])
|
|
// continue;
|
|
|
|
GL_Bind (SKY_TEX+skytexorder[i]);
|
|
|
|
//#if 0 // jkrige - skybox (enabled skybox with fixed mins/maxs)
|
|
//if(gl_fullskybox.value == 1)
|
|
//{
|
|
// skymins[0][i] = -1;
|
|
// skymins[1][i] = -1;
|
|
// skymaxs[0][i] = 1;
|
|
// skymaxs[1][i] = 1;
|
|
//}
|
|
//#endif
|
|
glBegin (GL_QUADS);
|
|
MakeSkyVec (-1 /*skymins[0][i]*/, -1 /*skymins[1][i]*/, i);
|
|
MakeSkyVec (-1 /*skymins[0][i]*/, 1 /*skymaxs[1][i]*/, i);
|
|
MakeSkyVec (1 /*skymaxs[0][i]*/, 1 /*skymaxs[1][i]*/, i);
|
|
MakeSkyVec (1 /*skymaxs[0][i]*/, -1 /*skymins[1][i]*/, i);
|
|
glEnd ();
|
|
}
|
|
//glDepthFunc(gld);
|
|
//#if 0
|
|
//glDisable (GL_BLEND);
|
|
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
//glColor4f (1,1,1,0.5);
|
|
glEnable (GL_DEPTH_TEST); // jkrige - skybox (disabled depth ckecking)
|
|
//#endif
|
|
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
//glEnable (GL_DEPTH_TEST);
|
|
|
|
// jkrige - skybox test
|
|
//restore matrix and rendering state
|
|
//glPopMatrix();
|
|
//glPopAttrib();
|
|
// jkrige - skybox test
|
|
}
|
|
|
|
//#endif // jkrige - skybox
|
|
|
|
|
|
|
|
//===============================================================
|
|
|
|
/*
|
|
=============
|
|
R_InitSky
|
|
|
|
A sky texture is 256*128, with the right side being a masked overlay
|
|
==============
|
|
*/
|
|
void R_InitSky (texture_t *mt)
|
|
{
|
|
int i, j, p;
|
|
byte *src;
|
|
unsigned trans[128*128];
|
|
unsigned transpix;
|
|
int r, g, b;
|
|
unsigned *rgba;
|
|
extern int skytexturenum;
|
|
|
|
|
|
// jkrige - external texture loading
|
|
FILE *f2;
|
|
//qboolean ExtOK = false;
|
|
int FoundSolid = -1;
|
|
int FoundAlpha = -1;
|
|
char skytex_solid[MAX_QPATH];
|
|
char skytex_alpha[MAX_QPATH];
|
|
byte *skydata;
|
|
|
|
// find solid sky texture
|
|
if(FoundSolid == -1)
|
|
{
|
|
sprintf (skytex_solid, "textures/%s/%s_solid.tga", sv.name, mt->name);
|
|
FoundSolid = COM_FOpenFile(skytex_solid, &f2);
|
|
}
|
|
if(FoundSolid == -1)
|
|
{
|
|
sprintf (skytex_solid, "textures/%s_solid.tga", mt->name);
|
|
FoundSolid = COM_FOpenFile(skytex_solid, &f2);
|
|
}
|
|
if(FoundSolid == -1)
|
|
{
|
|
sprintf (skytex_solid, "textures/%s/%s_solid.jpg", sv.name, mt->name);
|
|
FoundSolid = COM_FOpenFile(skytex_solid, &f2);
|
|
}
|
|
if(FoundSolid == -1)
|
|
{
|
|
sprintf (skytex_solid, "textures/%s_solid.jpg", mt->name);
|
|
FoundSolid = COM_FOpenFile(skytex_solid, &f2);
|
|
}
|
|
|
|
// find alpha sky texture
|
|
if(FoundAlpha == -1)
|
|
{
|
|
sprintf (skytex_alpha, "textures/%s/%s_alpha.tga", sv.name, mt->name);
|
|
FoundAlpha = COM_FOpenFile(skytex_alpha, &f2);
|
|
}
|
|
if(FoundAlpha == -1)
|
|
{
|
|
sprintf (skytex_alpha, "textures/%s_alpha.tga", mt->name);
|
|
FoundAlpha = COM_FOpenFile(skytex_alpha, &f2);
|
|
}
|
|
if(FoundAlpha == -1)
|
|
{
|
|
sprintf (skytex_alpha, "textures/%s/%s_alpha.jpg", sv.name, mt->name);
|
|
FoundAlpha = COM_FOpenFile(skytex_alpha, &f2);
|
|
}
|
|
if(FoundAlpha == -1)
|
|
{
|
|
sprintf (skytex_alpha, "textures/%s_alpha.jpg", mt->name);
|
|
FoundAlpha = COM_FOpenFile(skytex_alpha, &f2);
|
|
}
|
|
|
|
|
|
if(FoundSolid != -1 && FoundAlpha != -1)
|
|
{
|
|
// load solid sky texture
|
|
if ((skydata = LoadImagePixels (skytex_solid, false)))
|
|
{
|
|
if (!solidskytexture)
|
|
solidskytexture = texture_extension_number++;
|
|
|
|
GL_Bind (solidskytexture);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, image_width, image_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, skydata);
|
|
|
|
if(gl_texturemode.value == 0.0f)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
}
|
|
|
|
free(skydata);
|
|
}
|
|
|
|
// load alpha sky texture
|
|
if ((skydata = LoadImagePixels (skytex_alpha, false)))
|
|
{
|
|
if (!alphaskytexture)
|
|
alphaskytexture = texture_extension_number++;
|
|
|
|
GL_Bind(alphaskytexture);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format, image_width, image_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, skydata);
|
|
|
|
if(gl_texturemode.value == 0.0f)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
}
|
|
|
|
free(skydata);
|
|
}
|
|
|
|
return;
|
|
}
|
|
// jkrige - external texture loading
|
|
|
|
|
|
src = (byte *)mt + mt->offsets[0];
|
|
|
|
// make an average value for the back to avoid
|
|
// a fringe on the top level
|
|
|
|
r = g = b = 0;
|
|
for (i=0 ; i<128 ; i++)
|
|
for (j=0 ; j<128 ; j++)
|
|
{
|
|
p = src[i*256 + j + 128];
|
|
rgba = &d_8to24table[p];
|
|
trans[(i*128) + j] = *rgba;
|
|
r += ((byte *)rgba)[0];
|
|
g += ((byte *)rgba)[1];
|
|
b += ((byte *)rgba)[2];
|
|
}
|
|
|
|
((byte *)&transpix)[0] = r/(128*128);
|
|
((byte *)&transpix)[1] = g/(128*128);
|
|
((byte *)&transpix)[2] = b/(128*128);
|
|
((byte *)&transpix)[3] = 0;
|
|
|
|
|
|
if (!solidskytexture)
|
|
solidskytexture = texture_extension_number++;
|
|
GL_Bind (solidskytexture );
|
|
glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, 128, 128, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
|
|
|
|
// jkrige - texture mode
|
|
//glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
//glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
if(gl_texturemode.value == 0.0f)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
}
|
|
// jkrige - texture mode
|
|
|
|
|
|
for (i=0 ; i<128 ; i++)
|
|
for (j=0 ; j<128 ; j++)
|
|
{
|
|
p = src[i*256 + j];
|
|
if (p == 0)
|
|
trans[(i*128) + j] = transpix;
|
|
else
|
|
trans[(i*128) + j] = d_8to24table[p];
|
|
}
|
|
|
|
if (!alphaskytexture)
|
|
alphaskytexture = texture_extension_number++;
|
|
GL_Bind(alphaskytexture);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format, 128, 128, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
|
|
|
|
// jkrige - texture mode
|
|
//glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
//glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
if(gl_texturemode.value == 0.0f)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
}
|
|
// jkrige - texture mode
|
|
}
|
|
|